TPC Ownership Research: 321 Holders and 15 Active Top-20 Names

TPC is not just a headline ticker in the latest ownership map. 13F Insight tracks 321 institutional holders in TUTOR PERINI CORP, including 15 active holders inside the top-20 holder set and 5 recent 13D/G records. That mix matters because a crowded stock can mean very different things depending on whether the first page is dominated by index exposure, market-maker inventory, active managers, or strategic holders.

The current holder base is broad enough to treat this as a market-structure story rather than a single-fund call. The top five include BlackRock, Inc., VANGUARD GROUP INC, DONALD SMITH & CO., INC., DIMENSIONAL FUND ADVISORS LP, and AMERICAN CENTURY COMPANIES INC. Passive or market-maker labels appear in 2 of the top five, so the read-through is not simply “smart money loves TPC.” The better question is where active dollars sit after removing the automatic ownership that comes from index mandates, benchmark replication, and trading inventory.

What the Holder List Reveals

The headline number is holder depth: 321 tracked institutions. That is enough breadth to make sudden news around TPC move through many different mandates at once. A passive index holder can be large without expressing a view; an active manager can be smaller but more useful as a signal; and a market maker can report a large 13F value because options and hedged positions create inventory rather than a long-only thesis.

That table is why the first screen of ownership data needs labels. BlackRock, Inc. leads the visible list at $316.3M, but the classification changes the interpretation. VANGUARD GROUP INC and DONALD SMITH & CO., INC. add scale, while DIMENSIONAL FUND ADVISORS LP and AMERICAN CENTURY COMPANIES INC show whether the stock is drawing active capital, passive benchmark exposure, or trading-firm balance sheet exposure.

Active Depth Versus Automatic Ownership

The active-holder count is the most useful second read. This pull shows 15 active holders among the top 20. That is not a guarantee of future performance, but it does tell investors that the ownership base is not only an ETF mirror. When active holders appear alongside index giants such as BlackRock, State Street, FMR, and JPMorgan, the story becomes a comparison between required ownership and discretionary allocation.

For retail investors, that distinction is practical. If a stock rallies on news, a passive-heavy list may say more about benchmark inclusion than about fresh conviction. If active managers are still highly visible after that filter, the holder map gives the news a sturdier ownership base. In TPC, the active count is high enough to keep the name on a watchlist, but the labels still caution against treating every large holder as a stock picker.

How to Use This Setup

The clean read is not “buy because institutions own it.” It is that TPC has enough holder depth for news to matter, enough active participation to avoid being a pure index artifact, and enough classification complexity to demand a careful read. Compare the stock page for TPC with adjacent large-cap maps such as NVDA MSFT AAPL ORCL DAL GM INTC WBD. The goal is to see whether the next filing confirms active accumulation, broad passive drift, or a holder-base rotation after the event.

The forward-looking anchor is the next 13F refresh for the quarter after 2026Q2 news flow. When those filings post, the important comparison will be active holder count, top-five classification, and whether reported values at the leading holders expand because shares rose, share counts rose, or both. Until then, this ownership map is best used as a risk lens: it shows who is already exposed before the next event, not who will be right after it.

Related ownership pages for context: BlackRock State Street FMR JPMorgan Morgan Stanley Norges Bank.